From 8c6a7c4071bd4a3cc05412a2f469a0d8da81517b Mon Sep 17 00:00:00 2001
From: "2569718930@qq.com" <2569718930@qq.com>
Date: Sat, 18 Apr 2026 16:15:34 +0800
Subject: [PATCH] Fix Russia station parser to read latest archive row

---
 src/data_collection/russia_station_sources.py |  2 +-
 tests/test_russia_station_sources.py          | 21 +++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/src/data_collection/russia_station_sources.py b/src/data_collection/russia_station_sources.py
index 441db870..873186d7 100644
--- a/src/data_collection/russia_station_sources.py
+++ b/src/data_collection/russia_station_sources.py
@@ -175,7 +175,7 @@ class RussiaStationSourceMixin:
             return None
 
         pair_count = min(len(time_rows), len(data_rows)) - 1
-        for idx in range(pair_count):
+        for idx in range(pair_count - 1, -1, -1):
             time_row = time_rows[idx + 1]
             data_row = data_rows[idx + 1]
             if len(time_row) < 2 or len(data_row) < 6:
diff --git a/tests/test_russia_station_sources.py b/tests/test_russia_station_sources.py
index a96f89aa..c8451e71 100644
--- a/tests/test_russia_station_sources.py
+++ b/tests/test_russia_station_sources.py
@@ -38,3 +38,24 @@ def test_fetch_moscow_official_nearby_keeps_nearest_ten_station_rows():
     assert rows[0]["station_code"] == "27524"
     assert rows[1]["station_code"] == "27500"
     assert all(row["distance_km"] is not None for row in rows)
+
+
+def test_russia_weather_archive_parser_uses_latest_valid_row():
+    html = """
+    <table>
+      <tr><th>hour</th><th>date</th></tr>
+      <tr><td>09</td><td>11.04</td></tr>
+      <tr><td>21</td><td>17.04</td></tr>
+    </table>
+    <table>
+      <tr><th>a</th><th>b</th><th>c</th><th>d</th><th>cloud</th><th>temp</th></tr>
+      <tr><td>x</td><td>x</td><td>x</td><td>x</td><td>x</td><td>+4.2</td></tr>
+      <tr><td>x</td><td>x</td><td>x</td><td>x</td><td>x</td><td>+5.8</td></tr>
+    </table>
+    """
+
+    parsed = RussiaStationSourceMixin()._ru_parse_station_current_from_weather_html(html)
+
+    assert parsed["temp_c"] == 5.8
+    assert parsed["raw_hour"] == "21"
+    assert parsed["raw_day_month"] == "17.04"